Render different layouts

This adds the possibility to have multiple layouts when rendering HTML

How to:

1. Add a layout in layouts/
1. In the markdown's yaml file refer to it:

  layout: article

1 files changed, 5 insertions, 1 deletions

diff --git a/Rules b/Rules
index 989e14c4..cb0fd3b2 100644
--- a/Rules
+++ b/Rules
@@ -50,7 +50,11 @@ compile '/**/*.md' do
       },
       with_toc: include_toc
 
-    layout '/default.*'
+      if item[:layout].nil?
+        layout '/default.*'
+      else
+        layout "/#{item[:layout]}.*"
+      end
 
     filter :md_to_html_ext
   else